Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
96c57ade | 2 | #include <linux/ceph/ceph_debug.h> |
8f4e91de SW |
3 | #include <linux/in.h> |
4 | ||
8f4e91de | 5 | #include "super.h" |
3d14c5d2 | 6 | #include "mds_client.h" |
3d14c5d2 | 7 | #include "ioctl.h" |
8f4e91de SW |
8 | |
9 | ||
10 | /* | |
11 | * ioctls | |
12 | */ | |
13 | ||
14 | /* | |
15 | * get and set the file layout | |
16 | */ | |
17 | static long ceph_ioctl_get_layout(struct file *file, void __user *arg) | |
18 | { | |
496ad9aa | 19 | struct ceph_inode_info *ci = ceph_inode(file_inode(file)); |
8f4e91de SW |
20 | struct ceph_ioctl_layout l; |
21 | int err; | |
22 | ||
508b32d8 | 23 | err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT, false); |
8f4e91de | 24 | if (!err) { |
7627151e YZ |
25 | l.stripe_unit = ci->i_layout.stripe_unit; |
26 | l.stripe_count = ci->i_layout.stripe_count; | |
27 | l.object_size = ci->i_layout.object_size; | |
28 | l.data_pool = ci->i_layout.pool_id; | |
24c149ad | 29 | l.preferred_osd = -1; |
8f4e91de SW |
30 | if (copy_to_user(arg, &l, sizeof(l))) |
31 | return -EFAULT; | |
32 | } | |
33 | ||
34 | return err; | |
35 | } | |
36 | ||
e49bf4c5 SW |
37 | static long __validate_layout(struct ceph_mds_client *mdsc, |
38 | struct ceph_ioctl_layout *l) | |
39 | { | |
40 | int i, err; | |
41 | ||
e49bf4c5 SW |
42 | /* validate striping parameters */ |
43 | if ((l->object_size & ~PAGE_MASK) || | |
44 | (l->stripe_unit & ~PAGE_MASK) || | |
0bc62284 | 45 | ((unsigned)l->stripe_unit != 0 && |
45f2e081 | 46 | ((unsigned)l->object_size % (unsigned)l->stripe_unit))) |
e49bf4c5 SW |
47 | return -EINVAL; |
48 | ||
49 | /* make sure it's a valid data pool */ | |
50 | mutex_lock(&mdsc->mutex); | |
51 | err = -EINVAL; | |
52 | for (i = 0; i < mdsc->mdsmap->m_num_data_pg_pools; i++) | |
53 | if (mdsc->mdsmap->m_data_pg_pools[i] == l->data_pool) { | |
54 | err = 0; | |
55 | break; | |
56 | } | |
57 | mutex_unlock(&mdsc->mutex); | |
58 | if (err) | |
59 | return err; | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
8f4e91de SW |
64 | static long ceph_ioctl_set_layout(struct file *file, void __user *arg) |
65 | { | |
496ad9aa | 66 | struct inode *inode = file_inode(file); |
3d14c5d2 | 67 | struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; |
8f4e91de SW |
68 | struct ceph_mds_request *req; |
69 | struct ceph_ioctl_layout l; | |
496ad9aa | 70 | struct ceph_inode_info *ci = ceph_inode(file_inode(file)); |
a35eca95 | 71 | struct ceph_ioctl_layout nl; |
e49bf4c5 | 72 | int err; |
8f4e91de | 73 | |
8f4e91de SW |
74 | if (copy_from_user(&l, arg, sizeof(l))) |
75 | return -EFAULT; | |
76 | ||
a35eca95 | 77 | /* validate changed params against current layout */ |
508b32d8 | 78 | err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT, false); |
702aeb1f | 79 | if (err) |
a35eca95 GF |
80 | return err; |
81 | ||
702aeb1f | 82 | memset(&nl, 0, sizeof(nl)); |
a35eca95 GF |
83 | if (l.stripe_count) |
84 | nl.stripe_count = l.stripe_count; | |
702aeb1f | 85 | else |
7627151e | 86 | nl.stripe_count = ci->i_layout.stripe_count; |
a35eca95 GF |
87 | if (l.stripe_unit) |
88 | nl.stripe_unit = l.stripe_unit; | |
702aeb1f | 89 | else |
7627151e | 90 | nl.stripe_unit = ci->i_layout.stripe_unit; |
a35eca95 GF |
91 | if (l.object_size) |
92 | nl.object_size = l.object_size; | |
702aeb1f | 93 | else |
7627151e | 94 | nl.object_size = ci->i_layout.object_size; |
a35eca95 GF |
95 | if (l.data_pool) |
96 | nl.data_pool = l.data_pool; | |
702aeb1f | 97 | else |
7627151e | 98 | nl.data_pool = ci->i_layout.pool_id; |
702aeb1f SW |
99 | |
100 | /* this is obsolete, and always -1 */ | |
24c149ad | 101 | nl.preferred_osd = -1; |
a35eca95 | 102 | |
e49bf4c5 SW |
103 | err = __validate_layout(mdsc, &nl); |
104 | if (err) | |
105 | return err; | |
8f4e91de SW |
106 | |
107 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETLAYOUT, | |
108 | USE_AUTH_MDS); | |
109 | if (IS_ERR(req)) | |
110 | return PTR_ERR(req); | |
70b666c3 SW |
111 | req->r_inode = inode; |
112 | ihold(inode); | |
3bd58143 YZ |
113 | req->r_num_caps = 1; |
114 | ||
8f4e91de SW |
115 | req->r_inode_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL; |
116 | ||
117 | req->r_args.setlayout.layout.fl_stripe_unit = | |
118 | cpu_to_le32(l.stripe_unit); | |
119 | req->r_args.setlayout.layout.fl_stripe_count = | |
120 | cpu_to_le32(l.stripe_count); | |
121 | req->r_args.setlayout.layout.fl_object_size = | |
122 | cpu_to_le32(l.object_size); | |
123 | req->r_args.setlayout.layout.fl_pg_pool = cpu_to_le32(l.data_pool); | |
8f4e91de | 124 | |
752c8bdc | 125 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
8f4e91de SW |
126 | ceph_mdsc_put_request(req); |
127 | return err; | |
128 | } | |
129 | ||
571dba52 GF |
130 | /* |
131 | * Set a layout policy on a directory inode. All items in the tree | |
132 | * rooted at this inode will inherit this layout on creation, | |
133 | * (It doesn't apply retroactively ) | |
134 | * unless a subdirectory has its own layout policy. | |
135 | */ | |
136 | static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg) | |
137 | { | |
496ad9aa | 138 | struct inode *inode = file_inode(file); |
571dba52 GF |
139 | struct ceph_mds_request *req; |
140 | struct ceph_ioctl_layout l; | |
e49bf4c5 | 141 | int err; |
571dba52 GF |
142 | struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; |
143 | ||
144 | /* copy and validate */ | |
145 | if (copy_from_user(&l, arg, sizeof(l))) | |
146 | return -EFAULT; | |
147 | ||
e49bf4c5 SW |
148 | err = __validate_layout(mdsc, &l); |
149 | if (err) | |
150 | return err; | |
571dba52 GF |
151 | |
152 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETDIRLAYOUT, | |
153 | USE_AUTH_MDS); | |
154 | ||
155 | if (IS_ERR(req)) | |
156 | return PTR_ERR(req); | |
70b666c3 SW |
157 | req->r_inode = inode; |
158 | ihold(inode); | |
3bd58143 | 159 | req->r_num_caps = 1; |
571dba52 GF |
160 | |
161 | req->r_args.setlayout.layout.fl_stripe_unit = | |
162 | cpu_to_le32(l.stripe_unit); | |
163 | req->r_args.setlayout.layout.fl_stripe_count = | |
164 | cpu_to_le32(l.stripe_count); | |
165 | req->r_args.setlayout.layout.fl_object_size = | |
166 | cpu_to_le32(l.object_size); | |
167 | req->r_args.setlayout.layout.fl_pg_pool = | |
168 | cpu_to_le32(l.data_pool); | |
571dba52 GF |
169 | |
170 | err = ceph_mdsc_do_request(mdsc, inode, req); | |
171 | ceph_mdsc_put_request(req); | |
172 | return err; | |
173 | } | |
174 | ||
8f4e91de SW |
175 | /* |
176 | * Return object name, size/offset information, and location (OSD | |
177 | * number, network address) for a given file offset. | |
178 | */ | |
179 | static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg) | |
180 | { | |
181 | struct ceph_ioctl_dataloc dl; | |
496ad9aa | 182 | struct inode *inode = file_inode(file); |
8f4e91de | 183 | struct ceph_inode_info *ci = ceph_inode(inode); |
3d14c5d2 YS |
184 | struct ceph_osd_client *osdc = |
185 | &ceph_sb_to_client(inode->i_sb)->client->osdc; | |
7c13cb64 | 186 | struct ceph_object_locator oloc; |
281dbe5d | 187 | CEPH_DEFINE_OID_ONSTACK(oid); |
8f4e91de SW |
188 | u64 len = 1, olen; |
189 | u64 tmp; | |
51042122 | 190 | struct ceph_pg pgid; |
457712a0 | 191 | int r; |
8f4e91de SW |
192 | |
193 | /* copy and validate */ | |
194 | if (copy_from_user(&dl, arg, sizeof(dl))) | |
195 | return -EFAULT; | |
196 | ||
5aea3dcd | 197 | down_read(&osdc->lock); |
e8afad65 | 198 | r = ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, len, |
457712a0 SW |
199 | &dl.object_no, &dl.object_offset, |
200 | &olen); | |
494ddd11 | 201 | if (r < 0) { |
5aea3dcd | 202 | up_read(&osdc->lock); |
457712a0 | 203 | return -EIO; |
494ddd11 | 204 | } |
8f4e91de | 205 | dl.file_offset -= dl.object_offset; |
7627151e YZ |
206 | dl.object_size = ci->i_layout.object_size; |
207 | dl.block_size = ci->i_layout.stripe_unit; | |
8f4e91de SW |
208 | |
209 | /* block_offset = object_offset % block_size */ | |
210 | tmp = dl.object_offset; | |
211 | dl.block_offset = do_div(tmp, dl.block_size); | |
212 | ||
213 | snprintf(dl.object_name, sizeof(dl.object_name), "%llx.%08llx", | |
214 | ceph_ino(inode), dl.object_no); | |
41766f87 | 215 | |
7627151e | 216 | oloc.pool = ci->i_layout.pool_id; |
779fe0fb | 217 | oloc.pool_ns = ceph_try_get_string(ci->i_layout.pool_ns); |
d30291b9 | 218 | ceph_oid_printf(&oid, "%s", dl.object_name); |
7c13cb64 | 219 | |
d9591f5e | 220 | r = ceph_object_locator_to_pg(osdc->osdmap, &oid, &oloc, &pgid); |
779fe0fb YZ |
221 | |
222 | ceph_oloc_destroy(&oloc); | |
2fbcbff1 | 223 | if (r < 0) { |
5aea3dcd | 224 | up_read(&osdc->lock); |
2fbcbff1 | 225 | return r; |
226 | } | |
8f4e91de | 227 | |
f81f1633 | 228 | dl.osd = ceph_pg_to_acting_primary(osdc->osdmap, &pgid); |
8f4e91de SW |
229 | if (dl.osd >= 0) { |
230 | struct ceph_entity_addr *a = | |
231 | ceph_osd_addr(osdc->osdmap, dl.osd); | |
232 | if (a) | |
233 | memcpy(&dl.osd_addr, &a->in_addr, sizeof(dl.osd_addr)); | |
234 | } else { | |
235 | memset(&dl.osd_addr, 0, sizeof(dl.osd_addr)); | |
236 | } | |
5aea3dcd | 237 | up_read(&osdc->lock); |
8f4e91de SW |
238 | |
239 | /* send result back to user */ | |
240 | if (copy_to_user(arg, &dl, sizeof(dl))) | |
241 | return -EFAULT; | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
8c6e9229 SW |
246 | static long ceph_ioctl_lazyio(struct file *file) |
247 | { | |
248 | struct ceph_file_info *fi = file->private_data; | |
496ad9aa | 249 | struct inode *inode = file_inode(file); |
8c6e9229 SW |
250 | struct ceph_inode_info *ci = ceph_inode(inode); |
251 | ||
252 | if ((fi->fmode & CEPH_FILE_MODE_LAZY) == 0) { | |
be655596 | 253 | spin_lock(&ci->i_ceph_lock); |
8c6e9229 | 254 | fi->fmode |= CEPH_FILE_MODE_LAZY; |
774a6a11 | 255 | ci->i_nr_by_mode[ffs(CEPH_FILE_MODE_LAZY)]++; |
be655596 | 256 | spin_unlock(&ci->i_ceph_lock); |
8c6e9229 SW |
257 | dout("ioctl_layzio: file %p marked lazy\n", file); |
258 | ||
259 | ceph_check_caps(ci, 0, NULL); | |
260 | } else { | |
261 | dout("ioctl_layzio: file %p already lazy\n", file); | |
262 | } | |
263 | return 0; | |
264 | } | |
265 | ||
4918b6d1 SW |
266 | static long ceph_ioctl_syncio(struct file *file) |
267 | { | |
268 | struct ceph_file_info *fi = file->private_data; | |
269 | ||
270 | fi->flags |= CEPH_F_SYNC; | |
271 | return 0; | |
272 | } | |
273 | ||
8f4e91de SW |
274 | long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
275 | { | |
276 | dout("ioctl file %p cmd %u arg %lu\n", file, cmd, arg); | |
277 | switch (cmd) { | |
278 | case CEPH_IOC_GET_LAYOUT: | |
279 | return ceph_ioctl_get_layout(file, (void __user *)arg); | |
280 | ||
281 | case CEPH_IOC_SET_LAYOUT: | |
282 | return ceph_ioctl_set_layout(file, (void __user *)arg); | |
283 | ||
571dba52 GF |
284 | case CEPH_IOC_SET_LAYOUT_POLICY: |
285 | return ceph_ioctl_set_layout_policy(file, (void __user *)arg); | |
286 | ||
8f4e91de SW |
287 | case CEPH_IOC_GET_DATALOC: |
288 | return ceph_ioctl_get_dataloc(file, (void __user *)arg); | |
8c6e9229 SW |
289 | |
290 | case CEPH_IOC_LAZYIO: | |
291 | return ceph_ioctl_lazyio(file); | |
4918b6d1 SW |
292 | |
293 | case CEPH_IOC_SYNCIO: | |
294 | return ceph_ioctl_syncio(file); | |
8f4e91de | 295 | } |
571dba52 | 296 | |
8f4e91de SW |
297 | return -ENOTTY; |
298 | } |